look at the following code: function test(){ console.log(this === window); show(); window.show(); function show(){ console.log(this === window, fn ); } } function show(){ console.log(this === window, local ); } tes...
var a = 10; var obj1 = { a: 20, fn: (function() { this.a *= 2; a = 5; var a = 6; return function() { this.a *= a; console.log(a) } })() } var obj2 = { a: 30 } var fn = obj1.f...
A topic about the scope of JS functions related codes var xyx = 1; function fx(){console.log(xyx)} var xyx = 2; fx(); The result of the output is 2. isn t it supposed to look from the inside to the outside of the fx function declaration, and the...
Scope = VO + All Parent VOs I think this represents the variable object in this function scopeChain = [[VO] + [VO1] + [VO2] + [VO nesti1]]; this represents all the variable objects in the global environment All Parent VOs. ...
Why the difference between the two is wrong in the first place? it feels like a scope, but I can t tell why. Is there a specific first ? function e (v) { console.log(w) } function a(z){ return function b(y) { return function c(x) { ...
in the part where thinkphp5 is used as the site configuration item to take effect in real time read the data in the configuration table in the app_init hook function, which can be read in all pages. My idea is to use $GLOABLS. But I see other people ...
I have just learned python and encountered some problems about the scope of variables, as follows: the following is not very clear var a = 3 const f = () => { a += 4 console.log(a) } a() 7 f() 7 in js , you can not only access gl...
Code written by colleagues function tableVue(tableData){ var tableData = tableData; * vue * var tableV = new Vue({ el: -sharptable , data: { item:[] }, mounted: function () { ...
var a= 1; function fn1(){ alert(a); a = 2; } fn1(); alert(a); output 1 first, and then output 2 I would like to ask the browser about the process of performing this, and ask for advice ...
function student () { var name = xxx ; var getName = function () { return name } var setName = function (newName) { name = newName; } return { getName: getName, setName: setName, name: na...
how do you explain the relationship between spring scope and threads? Is there any relevance? the problem is as follows: spring scope is simulated in singleton mode, so it is considered that multiple requests for the same address will be executed seq...
I found that beforeEach, the vue navigation guard, can verify login permissions, so is there no need for axios interceptors? I hope the bosses will tell us what you think. or rather, the axios interceptor is sufficient, and there is no need for vue navi...
...
how to set the query intercepting query for mongotemplate in spring data jpa, and then modify the query statement before submitting the query. Just like the interceptor in hibernate. Now you need to intercept all MongoDBtemplate query requests. ...
there are more than 10 identical stations data www aa.com test.php data www bb.com test.php data www cc.com test.php I want to use the Linux command to batch modify data www aa.com test.php a certain line of the specified file $article MOD...
-sharp-sharp-sharp ...